JPH0119758Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention relates to the structure of partition walls, and in particular, to the structure of partition walls in airtight rooms that are subject to temperature changes, such as in the wind box of a combustion device. The present invention relates to a partition wall structure that allows openings in walls to be opened.

<Prior art and its problems> Partition walls are formed in the wind box of the boiler to correspond to the burners attached to the boiler, and high temperature recirculated exhaust gas is supplied to the wind box of each burner. The structure is such that the air ratio for each burner can be adjusted. When the boiler is stopped, a worker enters the wind box and inspects the inside of the wind box with this configuration. In order to facilitate the inspection work, a door is provided on the partition wall.

1 to 3 show the structure of a conventional door. A door frame 2 is attached to a partition plate 6 that partitions the wind box, and a blind plate 7 is attached to half of this door frame 2. Reference numeral 1 denotes a sliding door, and a roller 4 is attached to the lower part of the door by a roller shaft 5, and is placed on the upper edge of the bottom of the door frame 2 to support the load of the door. . A hook 3 engages with a pin 3' provided on the door frame 2 to keep the door 1 closed. The hook 3 can be operated from either side of the door 1 as shown in FIG.

Conventionally, the following drawbacks have been pointed out regarding this type of door.

(1) Since the door is a sliding type, the adhesion between the door and the door frame is low, so even if the door is closed, the sealing performance is poor, significantly reducing the function of the partition wall.

(2) Doors and door frames are often distorted by the heat of the combustion equipment, making it impossible to open and close the door, or conversely, creating large gaps that make sealing impossible.

<Purpose of the invention> The purpose of this invention is to eliminate the above-mentioned problems, and to create a partition wall structure that allows the door to be opened and closed reliably by operating from either side of the door, and which has a high airtightness. It is about providing.

<Summary of Means> In short, this invention has an opening component 12 that constitutes an opening in a partition wall of an airtight room that is subject to temperature changes, a door body 11 that opens and closes this opening, and an opening that corresponds to the opening. Moreover, the insert plate 13 interposed between the opening component and the door body, the first tightening structure 20a that tightens or releases the opening component and the insert plate 13 from the front side of the door, and the door body 11 and the insert from the back side of the door. the second for tightening or releasing the plate 13;
A tightening structure 20b is provided, and the door body 11
The opening component 12 is provided with openings 28 and 26 through which the first tightening structure 20a and the second tightening structure 20b can pass, respectively, and the front side of the door,
The present invention is characterized by a partition wall structure of an airtight chamber that is subject to temperature changes such that the partition wall opening of the opening component can be opened from either side of the back surface.

<Example> An example of this invention will be described below with reference to the drawings.

In FIGS. 4 and 5, reference numeral 17 is a partition wall that partitions the wind box, and an opening 17a is formed in the door mounting portion. Reference numeral 12 denotes a square-shaped opening component (hereinafter referred to as a door frame) disposed along the opening 17a, and is fixed to the partition wall 17 by welding. Reference numeral 11 denotes a door body, which is configured to swing in the X direction around an arm 16 attached to a partition wall 17.
Reference numeral 13 denotes an insert plate interposed between the door frame 12 and the door body 11, and like the door frame 12, it is formed in a square shape when viewed from the front. This insert plate 13 is not fixed to either side of the door frame 12 or the door body 11 by fixing means such as welding, and the door body 11, the door frame 12, and this insert plate 13 are fixed to each other by a fastening structure described later. We are trying to become one.

In Fig. 4, the reference numeral 20a indicates a first tightening structure operated from the front side (the X side in Fig. 5 is hereinafter referred to as the front), and the reference numeral 20b indicates a second tightening structure operated from the back side. The structure seals the door body, and by removing one of the fastening means, the door can be opened from either the front or back side of the door.

FIG. 6 shows the second tightening structure 20b, and FIG. 7 shows the first tightening structure 20a. Both have similar structures, and are installed so that the knobs are located on the front and back sides of the door body, respectively.

First, the structure of the second tightening structure 20b will be explained. Reference numeral 14 indicates a bolt with a stopper 24, and this bolt 14 is inserted into the insertion hole 2 formed in the door body 11 and the insert plate 13.
1 and 22, and is screwed into a nut 23 fixed to the door body 11 by welding or the like. 24 is bolt 1
4, and by rotating a knob 25 attached to the other end of the bolt, the door body 11 and the insert plate 13 are closely engaged by the nut 23 and the stopper 24. Reference numeral 26 denotes an opening provided in the opening component 12, and when the door is opened by operating from the front side of the door as described later, the entire second tightening structure 20b has a hole diameter that allows the knob 25 to pass through.

Next, in FIG. 7, the nut 23 is fixed to the opening component 12 by welding or the like, and the bolt 1
4' is inserted into the nut 2 through the insert plate 13 and the insertion holes 22', 27' of the door frame 12.
3', and the nut 23' and the stopper 24'
As a result, the insert plate 13 and the opening component 12 are closely engaged. Further, when opening the door by operating the door from the back side of the door body 11, the opening 26 should have a sufficient diameter so that the first tightening structure 20a does not get caught.

<Function> The following describes the function of opening the door body from the front side and opening the door body from the back side by operating the first and second tightening structures, opening constituent members, and structures as described above. do.

First, the method of tightening and fixing the door body 11 to the opening component 12 will be described.

In other words, the second tightening structure 20b allows the door body 11 and the insert plate 13 to
The insert plate 13 and the door frame 12 are closely engaged by the tightening structure 20a, and eventually,
The door body 11 has first and second tightening structures 20
a, 20b are tightly engaged with the opening component 12 via the insert plate 13.

Next, a method of operating and opening the door body blocking the opening of the opening component 12 will be explained with reference to FIGS. 8 and 9 in addition to FIGS. 6 and 7.

First, the operation of opening the door body from the front side shown in FIG. 8 will be explained. To open the door from the front, rotate knob 25'
All the bolts 14' of the first fastening structure 20a of the book (four bolts are used as an example for clarity) are removed.
As a result, the engagement between the insert plate 13 and the door frame 12 is released. On the other hand, since the second tightening structure 20b cannot be operated from the front side, the engagement between the door body 11 and the insert plate 13 is not released, so the door body 11 cannot be moved in the X direction (front side) with the insert plate 13 attached. open. In this case, since the hole diameter of the opening 26 of the opening component 12 is sufficiently large, the second
There is no problem in passing the entire tightening structure 20b. Reference numerals 11' and 13' in FIG. 8 indicate the door body and insert plate in an open state.

On the other hand, when opening the opening from the back side, the knob 25 of the second tightening structure 20b is used as shown in FIG.
Turn to completely remove the second tightening structure 20b. Note that when the knob 25 is a nozzle 25'' with an insertion/removal handle as shown in FIG. As a result, even if the insert plate 13 is tightened to the opening component 12 by the first tightening structure 20a, the engagement state between the door body 11 and the insert plate 13 is released, so that the door body 11 Only the opening 28 of the door body 11 opens in the X direction.
0a, the door body 11 is formed sufficiently large compared to the knob 25', so that the door body 11 is connected to the first tightening structure 20a.
It won't get caught. Reference numeral 11'' in FIG. 9 indicates a state in which the door body is opened by operation from the back side.

Although not shown in the drawings, if backing is interposed between the door frame 12 and the insert plate 13 and between the insert plate 13 and the door body 11, the sealing performance will be further improved.

<Effect> By implementing this idea, it is possible to open the opening of the opening component from either the front side or the back side of the door body, and it is possible to open the opening of the opening component from either the front side or the back side, and it is possible to operate the door body to open the opening of the opening component from either the front side or the back side. It was possible to provide a structure with high sealing performance that does not cause gas leakage even if thermal strain occurs at the opening of a closed room.

Further, even if thermal strain occurs, there will be no problem in opening the opening corresponding to the door body by releasing the bolt.

[Brief explanation of the drawing]

Figure 1 is a front view of a conventional sliding door, Figure 2 is a sectional view taken along line A-A in Figure 1, and Figure 3 is a front view of a conventional sliding door.
4 is a front view of a door according to an embodiment of the invention, FIG. 5 is a sectional view taken along line C-C in FIG. 4, and FIG. 7 is a side view of the first tightening structure; FIG. 8 is a partial perspective view of the door seen from the front side; FIG. 9 is a partial perspective view of the door seen from the back side; FIG. 10 is a side view of the knob with an insertion/extraction handle. 11... Door body, 12... Opening component,
13... insert plate, 14, 14'...
Bolt, 17... Partition plate, 20a... First tightening structure, 20b... Second tightening structure, 2
1, 22, 22', 27'...Bolt insertion hole, 2
3, 23'... Nut, 24, 24'... Stopper, 25, 25'... Knob, 26, 28... Opening,
25″...Knob with an insertion/extraction handle.

Claims (1)

[Scope of utility model registration request] It has an opening component 12 that constitutes a partition wall opening of an airtight room that is subject to temperature changes, a door body 11 that opens and closes this opening, and an opening that corresponds to the opening,
In addition, the insert plate 13 interposed between the opening component and the door body, the first tightening structure 20a that tightens or releases the opening component 12 and the insert plate 13 from the front side of the door, and the door body 11 from the back side of the door. and a second tightening structure 20b for tightening or releasing the insert plate 13, and the first tightening structure 20b is provided on the door body 11 and the opening component 12, respectively.
0a, the openings 28 and 26 through which the second tightening structure 20b can pass are provided, and the partition wall opening of the opening component can be opened from either the front or back side of the door. Partition wall structure in a closed room.